What is the ruling on a woman looking at a man on TV or
looking in an ordinary fashion in the street?

He replied:

When women look at men, whether that is on TV or otherwise,
one of the following two scenarios must apply:

1 – Looking with desire and enjoyment, which is haraam
because of the evil and fitnah (temptation) involved

2 – Simply looking with no desire or enjoyment; there is
nothing wrong with this according to the correct scholarly view, and this is
permissible because it was proven that ‘Aa’ishah (may Allaah be pleased with
her) watched the Ethiopians when they were playing in the mosque, and the
Prophet (peace and blessings of Allaah be upon him) was screening her
from them, and he approved of her doing that.

Women walk in the markets and look at men even when they are
wearing hijab, so a woman may look at a man even when he does not look at
her, on condition that there be no feelings of desire or fitnah
(temptation). If there are any feelings of desire or fitnah (temptation)
then it is haraam to look, whether the man is on TV or otherwise.